as featured in怎么理解？

如果后面加东西，as featured in... 就是说 有...中所示的特征。
如果后面不加东西， as featured in. 就是说 已包含该特征；已集成了该特性。

如展示的一样。
This handphone's function is as featured in the advertisement.
这架手机的功能如同广告上展示的一样。